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https://issues.apache.org/jira/browse/JENA-1855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne resolved JENA-1855.
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Fix Version/s: Jena 3.15.0
Resolution: Fixed
> TRIG parser yields NULL-graph for quads in default graph
> --------------------------------------------------------
>
> Key: JENA-1855
> URL: https://issues.apache.org/jira/browse/JENA-1855
> Project: Apache Jena
> Issue Type: Bug
> Components: RIOT
> Affects Versions: Jena 3.14.0
> Reporter: Claus Stadler
> Assignee: Andy Seaborne
> Priority: Major
> Fix For: Jena 3.15.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Hi Jena Team and Andy, thanks for all your great work on Jena and fixing all
> my recent issues, but I found another one :)
> The Trig Parser yields quads with a null value in the graph component for
> data in the default graph. It should be Quad.defaultGraphNodeGenerated.
> Test data:
> {code}
> # test.trig
> @base <http://www.example.org/base-> .
> @prefix : <http://www.example.org/prefx-> .
> <s> <p> <o> .
> :x :y :z .
> {code}
> {code:java}
> Iterator<Quad> it =
> RDFDataMgr.createIteratorQuads(RDFDataMgr.open("test.trig"), Lang.TRIG, null);
> while(it.hasNext()) {
> Quad q = it.next();
> System.out.println(q.getGraph());
> }
> {code}
> {code}
> null
> null
> {code}
> This causes quite unexpected null pointer exceptions, such as in this simple
> scenario:
> {code}
> Dataset ds = RDFDataMgr.loadDataset("test.trig");
> System.out.println(ds.asDatasetGraph().size());
> {code}
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